Hitachi RA-08JDF2, RA-10JDF2 Operation And Installation Manual

– 2 –

SAFETY PRECAUTION

● Please read the “Safety Precaution” carefully before operating the unit to ensure correct usage of the unit.

●

Pay special attention to signs of “ Warning” and “ Caution”. The “Warning” section contains matters which,
if not observed strictly, may cause death or serious injury. The “Caution” section contains matters which may
result in serious consequences if not observed properly. Please observe all instructions strictly to ensure safety.

● “ ” sign in attached figure indicates prohibition.

● Please keep this manual after reading.

PRECAUTIONS DURING INSTALLATION

WARNING

●

Please ask your sales agent or qualified technician for the installation of your unit. Water
leakage, short circuit or fire may occur if you install the unit yourself.

●

Please use earth line.
Do not place the earth line near water or gas pipes, lightning-conductor or the earth line
of telephone. Improper installation of earth line may cause electric shock.

●

A circuit breaker should be installed depending on the mounting site of the unit. Without
a circuit breaker, the danger of electric shock exists.

●

Do not install near location where there is flammable gas. The unit may catch fire if
flammable gas leaks around it.

●

Please ensure smooth flow of water when installing the drain hose. (For drain model)

CAUTION

PRECAUTIONS DURING SHIFTING OR MAINTENANCE

WARNING

●

Should abnormal situation arises (like burning smell), please stop operating the unit and turn off the
circuit breaker. Contact your agent. Fault, short circuit or fire may occur if you continue to operate
the unit under abnormal situation.

●

Please contact your agent for maintenance. Improper self maintenance may cause electric shock
and fire.

●

Please contact your agent if you need to remove and reinstall the unit.
Electric shock or fire may occur if you remove and reinstall the unit yourself improperly.

PRECAUTIONS DURING OPERATION

●

Avoid an extended period of direct air flow for your health.

●

Do not put objects like thin rods into the panel of blower and suction side because the high-speed fan inside may cause
danger.

●

Do not use any conductor as fuse wire, this could cause fatal accident.

●

During thunder storm, disconnect and turn off the circuit breaker.

●

The product shall be operated under the manufacturer specification and not for any other intended use.

●

Do not attempt to operate the unit with wet hands, this could cause fatal accident.

●

When operating the unit with burning equipments, regularly ventilate the room to avoid oxygen insufficiency.

●

Do not direct the cool air coming out from the air-conditioner panel to face household heating apparatus as this may affect
the working of apparatus such as the electric kettle, oven etc.

●

Please ensure that unit mounting frame is always stable, firm and without defect. If not, the unit may collapse and
cause danger.

●

Do not splash or direct water to the body of the unit when cleaning it as this may cause short circuit.

●

Do not place plants directly under the air flow as it is bad for the plants.

●

Please switch off the unit and turn off the circuit breaker during cleaning, the high-speed fan inside the unit may cause
danger.

●

Turn off the circuit breaker if the unit is not be operated for a long period.

●

Do not climb on the unit or put objects on it.

●

Do not put water container (like vase) on the unit to avoid water dripping into the unit. Dripping water will damage
the insulator inside the unit and causes short circuit.

●

When operating the unit with the door and windows opened, and with the air deflector facing down for a long period of time, water
will condensed on the air deflector and drips down occasionally. This will wet your furniture. Therefore, do not operate under such
condition for a long time.

●

If the amount of heat in the room is above the cooling capability of the unit (for example: more people entering the room, using heating
equipments and etc.), the preset room temperature cannot be achieved.

W

A
R
N

I
N
G

– 3 –

PARTS IDENTIFICATION AND OPERATIONS

1 Cabinet
2 Suction Grille
3 Horizontal Deflectors
4 Vertical Deflector
5 Air Exhaust Lever
6 Front Cover
7 Control Panel Cover

1

2

3
4
5

76

REMOTE CONTROLLER

CONTROL PANEL INDICATION LAMP

POWER SWITCH

AUTO SWING
SWITCH

TEMPORARY SWITCH
Use this switch to start operation and stop when
the remote controller does not work. Normally do
not use this switch.

RECEIVING PART

TIMER LAMP
This lamp lights when the
timer is set.

OPERATION lamp
This lamp lights when the
unit is operating.

DEHUMIDIFY lamp
This lamp lights when the
dry mode is working.

Model Width Height Depth

181/2", 470mm 139/16", 345mm 237/20", 610mm

RA-08JDF2
RA-10JDF2

– 4 –

NAMES AND FUNCTIONS OF REMOTE CONTROL UNIT

■ This controls the operation function and timer setting of the room air conditioner.
The range of control is about 4 meters. If indoor lighting is controlled electronically,
the range of control may be shorter.

Signal Transmission

∞

ON/OFF Button

Press this button to start operation.
Press it again to stop operation.

FUNCTION Button

Select the operation mode.
(☞ page 7)

SLEEP TIMER Button

Use this button to set the sleep
timer. (☞ page 6)

RESERVE Button

Timer setting reservation.

OFF TIMER Button

Select the turn OFF timer.

TRANSMISSION Sign

The transmission sign blinks
when a signal has been sent.

TEMPERATURE Button

Room temperature setting.
Value will change quicker when
keep pressing. (☞ page 7)

FAN SPEED Button

Select the fan speed for cooling
and circulation mode.
(☞ page 7)

CANCEL Button

Cancel timer reservation.

ON TIMER Button

Select the turn ON timer.

Precautions for Use

● Do not put the remote controller in direct

sunlight and high temperature.

● Do not drop it on the floor, and protect it

from water.

● If you press the FUNCTION selector

button during operation, the air
conditioner may stop for about 3 minutes
for protection before you can start it
again. (unless you turn off and on again
the power source)

You can use the remote controller by fixing it on the wall
with the accessory parts.

● Before fixing it,

make sure the
unit can be
controlled by the
remote control
unit at the fixing
position.

HOLDER

REMOTE
CONTROLLER

BATTERIES INSTALLATION

● The direction of batteries must match the mark in the case.

● Do not mix use the old and new or different kinds of batteries together.

● Take out the batteries when you do not use it for more than one month.

CAUTION

Slightly push
and slide out
the cover.

■ BATTERIES

●

Please use AAA type of batteries.

●

Life of batteries is about 1 year for normal usage.

●

Replace the batteries when the lighting of LCD becomes dim.

●

After replace the batteries and if operation is abnormal, take
out the batteries and install again after 5 seconds.

– 5 –

HOW TO USE

AUTOMATIC OPERATION

■ The device will automatically determine the operation mode either COOL or

DEHUMIDIFY depending on the initial room temperature.

Press the (START/STOP) button

● Operation start with a “beep”.

Press the (START/STOP) button

● Please make sure you have selected the (Automatic) mode

by using the (FUNCTION) button.

● The starting operation will occur an abnormal sound (turbo

sound) which doesn’t affect the operation.

● The fan speed selector does not work at this operation.

1

STOP

■ You can slightly adjust the room temperature.

Press the (ROOM TEMPERATURE) button

● Temperature setting change by 1°C for each 1 time press.

2 Up

2 Down

● You can raise or lower the temperature setting by a maximum of

3°C.

●

The display does not indicate the preset temperature in the
Automatic

mode. Device will receive the setting by a “beep”.

1

■ CONDITION OF AUTOMATIC OPERATION

●

The selected mode of operation will not change during the operation even though the room
temperature change.

Initial room temperature

Function Temperature setting FAN SPEED

(approx.)

HIGH at start, LOW after

Over 27°C COOL 27°C the preset temperature is

reached

16 ~ 27°C DEHUMIDIFY

Slightly lower than the

QUIET

room temperature

– 6 –

HOW TO SET THE SLEEP TIMER

■ When the room temperature is higher than the thermostat set temperature, only the fan operates to
circulate the upper hotter air downwards. This makes temperature distribution of the room evenly at
heating. This operation is useful in winter when using other heating equipment.

Press the (START/STOP) button

● Operation start with a signal received sound “beep”.

Press the (START/STOP) button

● Make sure you have select the (Circulate) mode by using

the (FUNCTION) button.

● You can select the fan speed and desired temperature.

1

STOP

Example: Setting 3 hours
sleep time.

THE RANGE OF CONTROL FOR WIRELESS REMOTE CONTROL UNIT

Mode Indication

Sleep Timer

1 hour 2 hours

Sleep timer off

3 hours 7 hours

Sleep Timer: The device will continue working for the desired
number of hours and then turn off.
Point the signal window of the remote controller toward the
unit, and press the

(SLEEP TIMER) button.
The timer information will be displayed on the remote
controller.
The TIMER lamp lights with a beep.

CIRCULATION OPERATION

ROOM AIR
CONDITIONER

ROOM AIR CONDITIONER

RECEIVING PART

CEILING

RECEIVING PART

about 20°

about 3m

WALL

FLOOR

REMOTE CONTROL
UNIT

about

75°

4m

about
50°

about
50°

– 7 –

MANUAL OPERATION [Cooling • Dehumidify • Circulation]

■ Please use under below condition when you want to set the function mode, room temperature and
fan speed by manually.

DEHUMIDIFYING COOLING

Room Temperature Outdoor Temperature

16°C above 22–42°C

OPERATION MODE SELECTION

● Every time you press the button, the mode will change as the

below sequence.

(Auto) (Cool) (Dehumidify) (Circulation)

1

ROOM TEMPERATURE SETTING

2 Up
2 Down

● The cooling operation does not start if the

temperature setting is higher than the current
room temperature.

2

FAN SPEED SETTING

●

Every time you press the button, fan speed will change as the below
sequence.

● COOLING :

● CIRCULATION :

● DEHUMIDIFY :

(QUIET) (FIXED)

(QUIET)(LOW)(HIGH)

(QUIET)(LOW)(HIGH)(Auto)

3

Press the (START/STOP) button

● Operation start with a signal received sound “beep”.

Press the (START/STOP) button

● As the settings are stored in memory in the remote control unit, you only

have to press the (START/STOP) button next time.

4

STOP

■ Recommend Temperature

Dehumidify 16~26°C

Cooling 25~28°C

– 8 –

■ DEHUMIDIFYING CONDITION

●

Operation condition depend on the setting Temperature.

SETTING TEMPERATURE OPERATION CONDITION

LOWER THAN ROOM

TEMPERATURE

HIGHER THAN ROOM

TEMPERATURE

Device will dehumidify, reducing the room temperature to the
preset level.
Operation stop when room temperature becomes lower than
setting temperature and start again operation when it is higher
than setting temperature.

Dehumidifying will be performed with the room temperature set
slightly lower than the current room temperature regardless the
temperature setting. (When room temperature is lower 16°C,
setting temperature will be 16°C.)
Operation stop when room temperature becomes lower than
setting temperature and start again operation when it is higher
than setting temperature.

■ FAN SPEED MODE AND OPERATION CONDITION

CIRCULATION COOLING

“Auto” Not available

“High” Full speed for room temperature distribution. Quick cooling for economical operation

“Low” Quiet

“Quiet” Super Quiet

High speed at the starting of operation
and change to low when the preset
temperature has been achieved.

CAUTION

●

Continuous operation at high humidify (over 80% at indoors) will cause some dews form on the air outlet grille
of the unit.

– 9 –

OFF TIME setting

●

Select the OFF TIME by pressing the
(OFF) button.

●

Setting time will change according to the below
sequence when you press the button.

0.5 hour interval 1 hour interval

●

The value change more quickly if you keep pressing
the button.

Press the (Reserve) button

●

OFF TIMER reserved with a signal received
sound “beep”.

● The (OFF) Mark starts lighting instead of

blinking.

1

OFF Timer Reservation

2

ON TIME setting

● Select the ON TIME by pressing the (ON)

button.

● At the beginning of setting, time 6 hours was set.

● Setting time will change according to the below

sequence.

0.5 hour interval 1 hour interval

●

The value change more quickly if you keep pressing
the button.

Press the (Reserve) button

● ON TIMER reserved with a signal received

sound “beep”.

●

The (ON) Mark starts lighting instead of blinking.

1

2

ON Timer Reservation

1

Press the (Cancel) button

●

As the time settings are stored in remote controller
memory, you only have to press the (Reserve)
button in order to use the same setting next time.

CANCELLATION of Timer Reservation

■ Operation stop at setting time

■ ON Timer and OFF Timer are available.

TIMER RESERVATION

■ Operation will start for setting
temperature at setting time (The starting
time may different depend on the room
temperature and set temperature).

– 10 –

AIR DEFLECTORS

VERTICAL DEFLECTORS

Vertical deflectors at both sides of outlets can
be set to either auto-swing or static position to
direct discharge air rightward, leftward or
forward direction.

HORIZONTAL DEFLECTORS

Horizontal deflectors at both sides of the outlets
can be set to direct discharge air upward,
downward or forward direction.

Vertical
Deflector

Vertical
Deflector

Horizontal
Deflectors

Horizontal
Deflectors

CAUTION

To avoid dew forming on the deflectors which eventually may drip to the floor, please do not adjust
horizontal deflectors extremely downward position or vertical deflectors extremely leftward or
rightward position during cool operation for a long time.
Also, do not adjust the vertical deflectors position by hand or any other object.

Set the air exhaust lever to the OPEN (pull) position for
air ventilation in the room. The air exhaust lever should
normally be kept in CLOSE (push inward) position
during cooling operation and in the case of typhoon.

Air Exhaust Lever

AIR EXHAUST LEVER

Use the temporary switch for start or stop
operation when operation cannot be done with
the remote controller.
By pressing the temporary switch, [use non­conductor stick (example toothpick)], the
operation is done in previously set operation
mode.
When the operation is done using the temporary
switch, after the power source is turned off and
is turned on again, the operation is done in
automatic mode.

TEMPORARY SWITCH

POWER SWITCH

AUTO SWING SWITCH

● When the AUTO SWING switch is turned to “ON” position, the vertical deflectors automatically oscillate

right and left sweeping the cold air alternately to obtain comfortable cooling.

● The vertical deflectors may be stopped at any position when the AUTO SWING switch is turned “OFF”.

When you do not use the room air conditioner, set the power switch to “OFF”.

POWER SWITCH

TEMPORARY
SWITCH

AUTO SWING
SWITCH

– 11 –

AIR CLEANING FILTER

ALWAYS STOP THE OPERATION BEFORE INSTALLING THE AIR CLEANING FILTER.

AIR CLEANING FILTER IS WASHABLE AND REUSABLE UP TO 20 TIMES BY USING VACUUM
CLEANER OR RINSE WITH RUNNING TAP WATER.

AIR CLEANING FILTER SHOULD BE CLEANED EVERY MONTH OR SOONER IF NOTICEABLE
LOADING OCCURS. WHEN USE OVERTIME, IT MAY LOSE ITS DEODORIZING FUNCTION.

FOR MAXIMUM PERFORMANCE, IT IS RECOMMENDED TO REPLACE IT EVERY 3-6 MONTHS
DEPENDING ON APPLICATION REQUIREMENT.

TYPE NUMBER FOR THIS AIR CLEANING FILTER IS <SPX-CFH8W>, PLEASE USE THIS
NUMBER FOR ORDERING WHEN YOU WANT TO RENEW IT.

TEMPERATURE AND HUMIDITY

Avoid to use the room air conditioner for cooling operation when the outside temperature is below
21°C (70°F). Recommended operation humidity should be below 80%. Continuous long operation at
over 80% humidity (indoor) will cause some dews form on the outlet grille of the unit.

NOISE

In a quiet environment or stopping and starting operation, phenomena like flowing noise of
refrigerant in the refrigerating cycle and rubbing noise from the fan casing may occasionally occur,
but this is normal for the operation.
Water will condense on the evaporator coil and collected in the bottom tray, it is picked up by the
condenser fan and blown onto the condenser coil, this creates a “splashing” noise which is normal.

ODOR

The odor will possibly be emitted from the room air conditioner especially at the starting of operation
and in a high humidity condition. This is not abnormal phenomena because of the various kind of
odors emitted by smoke, food stuffs, cosmetics and others which may stick to the room air
conditioner. So, please clean the air filter and evaporator at the beginning of long no operation period
to reduce the odor.

NOTES ON OPERATION

Air Cleaning
Filter

Hook

1. Open the suction grille

2. Remove the normal
filter

3. Install the air cleaning filter
in the frame

4. Install back the normal filter
and close the suction grille